Abstract: Holder for a rotary tool which holder is formed with a holder body comprising a rear drive end and a front connection end having a connection thread for the connection of the tool. The holder comprises a thrust collar having a flat contact surface facing a connection end of the holder. The holder comprises an axially movable operating means, a number of restraint elements placed in one or more spaces in the holder body which restraint elements in a first axial position of the operating means are prevented from radial movement in said spaces and which restraint elements in a second axial position of the operating means allow radial movement in said spaces. Each one of said spaces for the restraint elements is limited in the axial direction by a front limiting wall and a rear limiting wall, which two limiting walls are parts of the holder body.

Abstract: Holder for a rotary tool which holder is formed with a holder body comprising a rear drive end and a front connection end having a connection thread for the connection of the tool. The holder comprises a thrust collar having a flat contact surface facing a connection end of the holder. The holder comprises an axially movable operating means, a number of restraint elements placed in one or more spaces in the holder body which restraint elements in a first axial position of the operating means are prevented from radial movement in said spaces and which restraint elements in a second axial position of the operating means allow radial movement in said spaces. Each one of said spaces for the restraint elements is limited in the axial direction by a front limiting wall and a rear limiting wall, which two limiting walls are parts of the holder body.

Abstract: A saw blade includes a first edge having teeth and a second edge principally opposed to the first edge, which second edge extends in a first principal direction of extension along a first part of its principal extension and in a second principal direction of extension along a second part of its principal extension, neither said first nor said second principal direction of extension being parallel to a principal direction of extension of said first edge, but said first principal direction of extension forming a first and positive angle (A) with said principal direction of extension of said first edge and said second principal direction of extension forming a second and negative angle (B) with said principal direction of extension of said first edge.

Abstract: The present invention relates to a snap-type locking device for releasable and principally external keeping together of two parts and comprising at least one grip part at least one grip part, at least one movable arm and at least one spring, said at least one movable arm being turnably attached to said at least one grip part as well as, directly or indirectly, to a first part of said two parts. Said at least one spring abuts said at least one grip part in order to urge the same in a direction away from said two parts.

Abstract: The present invention relates to a saw blade with teeth, at least one of said teeth being set and said teeth have at least one continuously continuous sharp edge that is common to the teeth and, in a main plane of extension of the saw blade and prior to setting, has either a pure sinusoidal shape or a modified sinusoidal shape. The present invention also relates to a knife and a saw.

Abstract: During the manufacture of a bandsaw blade, a rotary hone forms, in a clearance side of each tooth, a narrow flat land. A leading edge of the land defines a sharp cutting edge. The land has a width no longer than ten percent of the pitch distance of the teeth.